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2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright © 2011 Tony Breeds IBM Corporation
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*
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* Based on earlier code:
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* Copyright (C) Paul Mackerras 1997.
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*
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* Matt Porter <mporter@kernel.crashing.org>
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* Copyright 2002-2005 MontaVista Software Inc.
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*
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* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
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* Copyright (c) 2003, 2004 Zultys Technologies
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*
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* Copyright 2007 David Gibson, IBM Corporation.
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* Copyright 2010 Ben. Herrenschmidt, IBM Corporation.
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* Copyright © 2011 David Kleikamp IBM Corporation
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*/
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#include <stdarg.h>
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#include <stddef.h>
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#include "types.h"
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#include "elf.h"
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#include "string.h"
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#include "stdio.h"
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#include "page.h"
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#include "ops.h"
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#include "reg.h"
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#include "io.h"
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#include "dcr.h"
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#include "4xx.h"
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#include "44x.h"
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#include "libfdt.h"
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BSS_STACK(4096);
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#define MAX_RANKS 0x4
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#define DDR3_MR0CF 0x80010011U
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static unsigned long long ibm_currituck_memsize;
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static unsigned long long ibm_currituck_detect_memsize(void)
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{
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u32 reg;
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unsigned i;
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unsigned long long memsize = 0;
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for(i = 0; i < MAX_RANKS; i++){
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reg = mfdcrx(DDR3_MR0CF + i);
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if (!(reg & 1))
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continue;
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reg &= 0x0000f000;
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reg >>= 12;
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memsize += (0x800000ULL << reg);
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}
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return memsize;
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}
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static void ibm_currituck_fixups(void)
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{
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void *devp = finddevice("/");
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u32 dma_ranges[7];
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dt_fixup_memory(0x0ULL, ibm_currituck_memsize);
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while ((devp = find_node_by_devtype(devp, "pci"))) {
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if (getprop(devp, "dma-ranges", dma_ranges, sizeof(dma_ranges)) < 0) {
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printf("%s: Failed to get dma-ranges\r\n", __func__);
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continue;
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}
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dma_ranges[5] = ibm_currituck_memsize >> 32;
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dma_ranges[6] = ibm_currituck_memsize & 0xffffffffUL;
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setprop(devp, "dma-ranges", dma_ranges, sizeof(dma_ranges));
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}
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}
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#define SPRN_PIR 0x11E /* Processor Identification Register */
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void platform_init(void)
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{
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unsigned long end_of_ram, avail_ram;
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u32 pir_reg;
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int node, size;
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const u32 *timebase;
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ibm_currituck_memsize = ibm_currituck_detect_memsize();
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if (ibm_currituck_memsize >> 32)
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end_of_ram = ~0UL;
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else
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end_of_ram = ibm_currituck_memsize;
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avail_ram = end_of_ram - (unsigned long)_end;
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simple_alloc_init(_end, avail_ram, 128, 64);
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platform_ops.fixups = ibm_currituck_fixups;
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platform_ops.exit = ibm44x_dbcr_reset;
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pir_reg = mfspr(SPRN_PIR);
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/* Make sure FDT blob is sane */
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if (fdt_check_header(_dtb_start) != 0)
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fatal("Invalid device tree blob\n");
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node = fdt_node_offset_by_prop_value(_dtb_start, -1, "device_type",
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"cpu", sizeof("cpu"));
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if (!node)
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fatal("Cannot find cpu node\n");
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timebase = fdt_getprop(_dtb_start, node, "timebase-frequency", &size);
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if (timebase && (size == 4))
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timebase_period_ns = 1000000000 / *timebase;
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fdt_set_boot_cpuid_phys(_dtb_start, pir_reg);
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fdt_init(_dtb_start);
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serial_console_init();
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}
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